I read this book, since the first pages I see the quality of redaction, learn and Knowledge. Phillip Newell knows about he is talking, with 30 years of experience, his comments make the diference between a amateur an a profesional enginner of Audio. All the information of this book it is based on personal and tecnical knowledge. If you are studing audio enginering, read this book to ensure your knowlege. Definitively, the best book I read . No more thin articles, no more acoustic problems, you have to buy it, read it, and your vision of the project studio, will not to be the same. It is like the BIBLE of the engineer, and a book of consult for lifetime. Values the price in gold.